Baluns (Brands, Designs, Losses, DIY Loops, etc.) - Page 15 - Canadian TV, Computing and Home Theatre Forums

Reply
 
LinkBack Thread Tools Search this Thread Display Modes

post #211 of 800 (permalink) Old 2009-03-17, 01:04 PM
 
Join Date: Jan 2008
Location: Beloeil
Posts: 608
300ohms,

Is it worth to browse the fleamarkets to try to find one made in Japan ?

Or if this did give me better results, then it is not worth it?


Intravino
intravino is offline  
Sponsored Links
Advertisement
 
post #212 of 800 (permalink) Old 2009-03-17, 03:56 PM
Veteran
 
Join Date: Mar 2008
Location: Somewhere in Delaware on the flat side
Posts: 7,360
Quote:
Is it worth to browse the fleamarkets to try to find one made in Japan ?
If you like to do that anyway, like me, then yes.

Today, I picked up an antique, never been used, clay Scottish pipe for $3. A new pipe in the tobacco store is a minimum of $20, and I needed another anyway, heh.
I also got well over $1000 worth of SLR camera lenses, in pristine condition, for my son for $42, heh.

My builds/plans (not the latest models) are located here.
300ohm is offline  
post #213 of 800 (permalink) Old 2009-03-18, 09:59 AM
 
Join Date: Jan 2008
Location: Beloeil
Posts: 608
I like fleamarkets too.

I guess now, I will search for the perfect balum.

Maybe I try to make one.
intravino is offline  
post #214 of 800 (permalink) Old 2009-03-18, 10:14 AM
Veteran
 
Join Date: Mar 2008
Location: Somewhere in Delaware on the flat side
Posts: 7,360
Quote:
I guess now, I will search for the perfect balum.
None are perfect, of course. The goal is just to get a better one, heh.

My builds/plans (not the latest models) are located here.
300ohm is offline  
post #215 of 800 (permalink) Old 2009-03-23, 09:45 AM
 
Join Date: May 2007
Posts: 258
Quote:
Originally Posted by 300ohm View Post
None are perfect, of course. The goal is just to get a better one, heh.
indeed, and if you find one, let us know
ppauper is offline  
post #216 of 800 (permalink) Old 2009-03-23, 09:48 AM
 
Join Date: May 2007
Posts: 258
japanese baluns

in reference to the japanese baluns a couple of people mentioned, are these discontinued or are the japanese still making them (so presumably in this internet age they could be ordered from japan ?)
ppauper is offline  
post #217 of 800 (permalink) Old 2009-03-23, 10:36 AM
Veteran
 
Join Date: Mar 2008
Location: Somewhere in Delaware on the flat side
Posts: 7,360
Good point, I dont know. A lot of the old Japanese manufacturing stuff is sold off to Taiwan and China and others, and the Japanese smartly move on to newer and more profitable endeavors. I noticed that on their blank optical disk manufacturing. The good TY blank CDs and DVDs are now pretty scarce.

My builds/plans (not the latest models) are located here.
300ohm is offline  
post #218 of 800 (permalink) Old 2009-03-26, 09:00 AM
 
Join Date: Feb 2009
Location: Upstate NY
Posts: 180
Gah. This whole thing is too addicting. Now I'm thinking of replacing the balun in my antenna, because I think the one I bought at home depot might be hampering my signal. (Phillips outdoor model)
firimari is offline  
post #219 of 800 (permalink) Old 2009-03-26, 09:39 AM
Veteran
 
Join Date: Jan 2009
Location: Montreal
Posts: 2,421
How does the Philipps outdoor compare with the CM 3075 balun...
balm is offline  
post #220 of 800 (permalink) Old 2009-03-26, 09:41 AM
 
Join Date: Feb 2009
Location: Upstate NY
Posts: 180
According to the links posted earlier, the Philips balun does not compare well.
Quote:
Code:
Maker          Model            Typ. Max.
-------------- ---------------- ---- ----
Channel Master Model 3075       1.7  2.2 dB
Philips        PM61009          3.0  4.7 dB
firimari is offline  
post #221 of 800 (permalink) Old 2009-03-26, 10:33 AM
Veteran
 
Join Date: Mar 2008
Location: Somewhere in Delaware on the flat side
Posts: 7,360
Wait a minute, there was another analysis done where the Phillips balun was very close to the CM one. I think the moral may be, it depends on the individual unit. The CM one may have better quality control at the factory.

My builds/plans (not the latest models) are located here.
300ohm is offline  
post #222 of 800 (permalink) Old 2009-03-26, 10:37 AM
Veteran
 
Join Date: Jan 2009
Location: Montreal
Posts: 2,421
I bought a Source balun, not sure of the name...but I guess the best bet is the CM.
balm is offline  
post #223 of 800 (permalink) Old 2009-03-26, 10:42 AM
Veteran
 
Join Date: Mar 2008
Location: Somewhere in Delaware on the flat side
Posts: 7,360
More than likely, but dont throw the other away. Test and compare it to the CM one.

My builds/plans (not the latest models) are located here.
300ohm is offline  
post #224 of 800 (permalink) Old 2009-03-26, 10:52 AM
 
Join Date: Feb 2009
Location: Upstate NY
Posts: 180
I'm really lamenting the fact that none of the pre-amps that I can find have 300 ohm inputs. I found the circuit layout for one in a 1977 IEEE Transactions on Broadcasting
(Advanced Antenna Design and an Ultralow-Noise Preamplifier Extend UHF Viewing Area : ieeexplore.ieee.org/iel5/11/4044035/04044041.pdf but you need an IEEE account or access to an institution that has one... Thanks, local college!)

But that is beyond my current insanity level here.
firimari is offline  
post #225 of 800 (permalink) Old 2009-03-26, 10:53 AM
Veteran
 
Join Date: Jan 2009
Location: Montreal
Posts: 2,421
firimari:

What's the basis for your statement that the balun might be hampering your signal - are you experiencing reception difficulties????cause now you have me doubting...
balm is offline  
Reply

Quick Reply
Message:
Options

Register Now



In order to be able to post messages on the Canadian TV, Computing and Home Theatre Forums forums, you must first register.
Please enter your desired user name, your email address and other required details in the form below.

User Name:
Password
Please enter a password for your user account. Note that passwords are case-sensitive.

Password:


Confirm Password:
Email Address
Please enter a valid email address for yourself.

Email Address:
OR

Log-in









Human Verification

In order to verify that you are a human and not a spam bot, please enter the answer into the following box below based on the instructions contained in the graphic.



Thread Tools Search this Thread
Show Printable Version Show Printable Version
Email this Page Email this Page
Search this Thread:

Advanced Search
Display Modes
Linear Mode Linear Mode



Posting Rules  
You may post new threads
You may post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is Off
Trackbacks are On
Pingbacks are On
Refbacks are On

 
For the best viewing experience please update your browser to Google Chrome